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Lemur [1.5K]
3 years ago
13

The difference between paper chromatography and thin layer chromatography is that

Chemistry
1 answer:
Lera25 [3.4K]3 years ago
5 0

The basic difference between thin layer chromatography (TLC) and paper chromatography (PC) is that, while the stationary phase in PC is paper, the stationary phase in TLC is a thin layer of an inert substance supported on a flat, unreactive surface. ... Paper chromatography is performed using paper.

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A bubble of helium gas has a volume of 0.650 cm3 near the bottom of a large aquarium where the pressure is 1.54 atm and the temp
aleksandrvk [35]

Answer:

1.005 cm³

Explanation:

Using Ideal gas equation for same mole of gas as

\frac {{P_1}\times {V_1}}{T_1}=\frac {{P_2}\times {V_2}}{T_2}

Given ,  

V₁ = 0.650 cm³

V₂ = ?

P₁ = 1.54 atm

P₂ = 1.01 atm

T₁ = 12°C

T₂ = 16 ºC

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T₁ = (12 + 273.15) K = 285.15 K  

T₂ = (16 + 273.15) K = 289.15 K  

Using above equation as:

\frac {{P_1}\times {V_1}}{T_1}=\frac {{P_2}\times {V_2}}{T_2}

\frac {{1.54}\times {0.650}}{285.15}=\frac {{1.01}\times {V_2}}{289.15}

Solving for V₂ , we get:

<u>V₂ = 1.005 cm³</u>

3 0
3 years ago
Which of the following would be the best technique to use in order to separate a liquid from a solution? (2 points)
tiny-mole [99]
Simple distillation :) hope I helped!
4 0
3 years ago
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Requiring industries to recycle 25% of plastics in their manufacturing process is an example of: Risk communication Risk assessm
Tomtit [17]

Answer:

Risk management

Explanation:

Risk communication is exchange of the advice, real-time information and the opinions between the experts and the people which are facing threats to their economic, health, or well-being.

Risk assessment is overall process where the hazards and the risk factors which have potential to cause the harm is identified.

Risk perception is subjective judgement which people/ experts make about characteristics and the severity of the risk.

Risk management is evaluation, identification and prioritization of the risks followed by the coordinated and the economical application of the resources to monitor, minimize and control probability of the unfortunate events.

Thus, Option D is correct because in risk management, a Quantitative Solution is given to decrease risk level like to recycle the plastic.

5 0
4 years ago
Read 2 more answers
Please help me with chemistry. Thanks
il63 [147K]
Constant:
Test tubes

Independent:
<span>volume of gas

Dependent:
</span>
<span>amount of H2O2 </span>
7 0
4 years ago
Read 2 more answers
The transfer of energy carried by light waves to particles in matter is called?
Dovator [93]

Answer: Absorption. The transfer of energy carried by light waves to particles of matter.

Explanation:

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3 years ago
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